Add Spaceshrooms (#17092)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Random/WeightedRandomFillSolutionPrototype.cs

@@ -0,0 +1,18 @@
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared.Random;
+
+/// <summary>
+///     Random weighting dataset for solutions, able to specify reagents quantity.
+/// </summary>
+[Prototype("weightedRandomFillSolution")]
+public sealed class WeightedRandomFillSolutionPrototype : IPrototype
+{
+    [IdDataField] public string ID { get; } = default!;
+
+    /// <summary>
+    ///     List of RandomFills that can be picked from.
+    /// </summary>
+    [DataField("fills", required: true)]
+    public List<RandomFillSolution> Fills = new();
+}